Amazon took its Generac warrant at roughly 14% above the pre-deal close

Amazon's investment subsidiary can buy up to 1.69 million Generac shares at $200.93 under the long-term supply agreement Generac disclosed in a regulatory filing ^[1][2]. Generac traded at $203.76 on Thursday morning, up 16% ^[5]. That puts Wednesday's close near $175.70 ^[1], and the strike about 14% above it ^[2]. More than 300,000 of the shares vest at once, and the rest vest in tranches tied to Amazon's generator purchases through 2033 ^[3]. At Thursday's price the full 1.69 million are worth about $344 million, a little over 3% of a $10 billion company ^[8][5].

Generac was up 28% for the year before the announcement, against about 10% for the S&P 500 ^[26]. By Thursday it was up 52% ^[25], so roughly 24 points of the year's gain came in one session ^[12]. Citi's Vikram Bagri kept a neutral rating and a $300 target, and called the deal "substantially larger than expected" ^[11]. His objection was to the price. "While the announcement is clearly positive, the after-hours reaction appears to reflect a valuation of roughly 15x the implied ~$1.2B annual revenue at a 20% EBITDA margin, which appears aggressive," Bagri wrote ^[10]. A 20% margin on $1.2 billion is $240 million, and 15 times that is $3.6 billion ^[6]; the 34% after-hours move on Wednesday added about $3.4 billion to a $10 billion company ^[7][7].

The $8 billion figure is getting quoted more widely than the signed $2.4 billion. William Blair's Brian Drab put an indication of $8 billion of spend over seven years on the agreement ^[13]. That divides out to $1.14 billion a year ^[8], against the $1.2 billion a year the signed deliveries already imply ^[3]. The Motley Fool's reading of the filing treats the $8 billion as purchases additional to the $2.4 billion, and that version comes to $1.49 billion a year ^[4][9]. Generac told investors in March that it expected $1 billion of data-center sales by 2028 and called that a "generational growth opportunity" ^[19]; the Amazon contract alone runs 20% above the whole forecast ^[11].

For Amazon the $2.4 billion is about 1.1% of the $220 billion of capital spending it now plans for this year ^[20][10]. For Generac it is 57% of 2025 revenue of $4.2 billion ^[9][4], and 1.5 times the roughly $1.6 billion data-center backlog reported in July ^[18][13]. Generac had already disclosed that it signed a contract on June 24 with a second hyperscale customer; the filing names Amazon ^[24].

24/7 Wall St. read Cummins' unchanged $527.48 as the clearest evidence that Thursday was a single-customer event and not a repricing of standby power as a category ^[17], with the industrials ETF up 0.1% and the S&P 500 ETF up 0.9% ^[15]. Baird's note points at something narrower. Michael Halloran wrote that "From previously getting little value ascribed to the DC business, this adds exceptional near-term profit/return contribution, long-term incentives, and durability/multiple on the business" ^[12]. What moved was the value of a data-center segment the price had been ignoring. The published accounts do not report Cummins' data-center revenue, so its exposure cannot be sized from them.

I would price the signed $2.4 billion and treat the $8 billion as an option Amazon controls, on the grounds that the later warrant tranches vest against orders that do not yet exist ^[3]. If the post-2028 tranches vest early, the ceiling behaves more like a booking. Should Amazon's orders stop after 2028, the unvested warrants never vest and Generac keeps the large-megawatt capacity it built for them; management said it would invest "to add further capacity as our pipeline of opportunities materializes" ^[21]. The sell side is split: eight firms held buy, outperform or overweight ratings on Thursday, and Barclays, Guggenheim and Citi were neutral or equal weight ^[14].